Motor rotor and motor

The motor rotor comprises a plurality of magnetic pole sections arranged in the circumferential direction, each magnetic pole section corresponds to a D shaft extending in the radial direction, a Q shaft extending in the radial direction is arranged between every two adjacent magnetic pole sections, and in a projection plane perpendicular to the axis of the motor rotor, the Q shaft extends in the radial direction. The projection of the rotor surface corresponding to the magnetic pole section is a spline curve section, the curve section of the spline curve section between the D axis and the Q axis is provided with at least two curve grooves, and the position of the spline curve section on the D axis is an extremely high point or an extremely low point of one curve arc section of the spline curve section. And the spline curve section is a non-extremely high point or a non-extremely low point of one curve arc section at the position of the center line of the D axis and the Q axis. By optimizing the structure of